Automatic positioning printer for PCB printing

Abstract

The invention discloses an automatic positioning printer for PCB board printing, comprising an adjustment plate arranged inside a frame, a flip mechanism arranged outside the adjustment plate, the flip mechanism comprising a rectangular frame, a bracket sleeved outside the rectangular frame, a fixed sleeve penetrating through the body of the bracket, an inner cavity opened on the body of the rectangular frame, an air hole connected inside the inner cavity, the air hole opened on the body of the rectangular frame and in a through-state, a fixed tube penetrating through the inner cavity, an outer surface of the fixed tube rotatably connected to the inside of the fixed sleeve, a clamping wheel penetrating through the outer surface of the fixed tube, the invention relates to the technical field of printers, and solves the problem that when the existing PCB board printer is used, when the PCB board is driven by the adjustment plate to adjust the angle, the PCB board is offset by the action of mechanical inertia force, thereby affecting the printing accuracy and efficiency of the printer.

Description

Technical Field

[0001] The present invention relates to the technical field of printers, in particular to an automatic positioning printer used for printing PCB boards. Background Art

[0002] In the prior art, when printing a PCB, the PCB is sometimes placed in a workstation to match the position of the printer. However, since the PCB is manually placed in the workstation to be printed, it is easy for the PCB angle to deviate, and then the text or pattern information printed on the PCB will also be shifted. The automatic positioning printer for PCB board printing with application number CN202222410046.3 includes a frame and a processing platform, which can achieve precise positioning of the PCB board and adjust the angle of the PCB in real time, thereby ensuring the accuracy of the printer body in printing the PCB board.

[0003] Although the device has the above advantages, it still has certain disadvantages in actual use. Since the PCB board is placed on the adjustment plate, when the angle is adjusted through the adjustment plate, the PCB board will be offset due to the inertia force due to mechanical inertia, thereby causing the PCB board to be misaligned, thereby affecting the accuracy and efficiency of its printing. Therefore, it is necessary to solve the problems that still exist in the above device. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an automatic positioning printer for PCB board printing, which solves the problem that when the existing PCB board printer is used, when the PCB board is driven by an adjustment plate to adjust the angle, the PCB board will be offset due to the action of mechanical inertia, thereby affecting the accuracy and efficiency of the printer's printing.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automatic positioning printer for PCB board printing, comprising an adjustment plate arranged inside a frame, a flip mechanism being arranged outside the adjustment plate, the flip mechanism comprising a rectangular frame, a bracket being sleeved outside the rectangular frame, a fixed sleeve being passed through the body of the bracket, an inner cavity being provided on the body of the rectangular frame, an air hole being connected inside the inner cavity, the air hole being provided on the body of the rectangular frame and being in a through-state, a fixed tube being passed through the inner cavity, an outer surface of the fixed tube being rotatably connected to the inside of the fixed sleeve, a clamping wheel being passed through and fixedly connected to the outer surface of the clamping wheel, a fixed ring being sleeved on the outer surface of the fixed ring, and a fixed connection being made to the inside of the fixed sleeve, a screw sleeve being fixedly connected to the outer surface of the bracket, a stud being threadedly connected to the inside of the screw sleeve, and a lifting rod being fixedly connected to one end of the stud.

[0006] Preferably, the outer surface of the lifting rod is fixedly connected to a connecting block, the body of the connecting block is threadedly connected to a screw rod, both ends of the screw rod are rotatably connected to solid blocks, one end of the screw rod is fixedly connected to an adjusting motor through a coupling, and the adjusting motor is fixedly mounted on the outer surface of a solid block on one side.

[0007] Preferably, a driving assembly is provided on the outside of the solid pipe, and the driving assembly includes a solid box, a fan is fixedly connected to the inside of the solid box, two air pipes are penetrated and connected to the inside of the solid box, and one end of the air pipe on one side is penetrated and connected to the inside of the solid sleeve.

[0008] Preferably, one end of the air pipe on the other side is penetrated and connected to a square sleeve, the interior of the square sleeve is rotatably connected to an impeller, the outer surface of the impeller is fixedly connected to a rotating rod, one end of the rotating rod sequentially penetrates the square sleeve and the fixed sleeve and extends to the interior of the solid pipe, the outer surface of the rotating rod is fixedly connected to a fixed strip, and the outer surface of the fixed strip is fixedly connected to the interior of the solid pipe.

[0009] Preferably, a positioning unit is provided on the outside of the rotating rod, and the positioning unit includes a circular plate, the body of the circular plate is penetrated and fixedly connected with the outer surface of the rotating rod, the body of the circular plate is provided with a through circular hole, spotlights and photosensitive plates are respectively provided on both sides of the circular hole, and the outer surfaces of the spotlights and the photosensitive plates are respectively fixedly connected with the outer surfaces of the fixed sleeve and the square sleeve.

[0010] Preferably, a clamping rod is movably connected inside the circular hole, one end of the clamping rod is fixedly connected to a push-pull rod, and the outer surface of the push-pull rod is fixedly connected to the outer surface of the fixed sleeve.

[0011] Preferably, a locking unit is provided on the outside of the rotating rod, and the locking unit includes a key shaft, the outer surface of the key shaft is movably connected to the inside of the fixed sleeve, the body of the key shaft is fixedly connected to the outer surface of the fixed tube, the outer surface of the key shaft is sleeved with a locking sleeve, and the locking sleeve is sleeved on the outside of the rotating rod.

[0012] Preferably, the outer surface of the locking sleeve is fixedly connected to a connecting column, the outer surface of the connecting column is fixedly connected to a linear motor, the outer surface of the linear motor is slidably connected to a slide rail, the outer surface of the slide rail is fixedly connected to the interior of the fixed sleeve, the outer surface of the slide rail is fixedly connected to a clamping plate, and the outer surface of the clamping plate is movably connected to the outer surface of the linear motor.

[0013] Preferably, a dislocation component is arranged outside the rectangular frame, and the dislocation component comprises a support bar, the outer surface of the support bar is respectively fixedly connected to the outer surface of the solid block and the outer surface of the adjustment plate, and the outer surfaces of the support bars on both sides are fixedly connected to telescopic rods.

[0014] Preferably, the outer surfaces of the support bars on both sides are fixedly connected with racks, gears are meshed between the outer surfaces of the racks on both sides, a connecting rod is fixedly connected between the gears on both sides, and the outer surface of the gear on one side is fixedly connected with an offset motor.

[0015] Beneficial Effects

[0016] The present invention provides an automatic positioning printer for PCB board printing. Compared with the prior art, it has the following beneficial effects:

[0017] (1) By setting a flip mechanism, a rectangular frame is sleeved on the outside of the PCB board, and air is absorbed through the inner cavity, air holes and fixed tubes, so that the PCB board is adsorbed on the rectangular frame by the action of negative pressure. The flow of air can make the fixed tube drive the PCB board to rotate through the rectangular frame to achieve angle adjustment, thereby avoiding the problem of misalignment of the PCB board caused by the mechanical inertia force when the adjustment plate is adjusted.

[0018] (2) By setting up a driving component and utilizing the cooperation of a fan and an air pipe, on the one hand, air can be sucked in through the air holes, thereby adsorbing and fixing the PCB board through negative pressure; on the other hand, during the exhaust process, the PCB board is driven to rotate and adjust the angle through the action of the impeller and the rotating rod.

[0019] (3) By setting a positioning unit and utilizing the equal-angle setting of the circular holes, when the circular plate rotates following the rotating rod, the light emitted by the spotlight shines on the photosensitive plate through the circular holes, thereby forming a photosensitive signal. The rotation angle is determined by the number of times the photosensitive signal is obtained.

[0020] (4) By setting up a locking unit and using a linear motor to drive the locking sleeve to move so that it is connected to the key shaft, the rotating rod can be locked, so that the fixed tube cannot rotate, so that the rectangular frame can stably adsorb the PCB board.

[0021] (5) By setting up the offset assembly, the offset motor can make the support bar drive the frame to move closer to the adjustment plate through the meshing of the gear and the rack, so that it is convenient for the frame to drive the PCB board to adjust the angle. After the adjustment is completed, the frame and the adjustment plate move away from each other, which also avoids affecting the printing of the PCB board by the printer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the external structure of the present invention;

[0023] Figure 2 It is a three-dimensional diagram of the external structure of the connecting block of the present invention;

[0024] Figure 3 The figure is a three-dimensional diagram of the external structure of the support bar of the present invention;

[0025] Figure 4 A three-dimensional diagram of the internal structure of the rectangular frame of the present invention;

[0026] Figure 5 It is a stereoscopic diagram of the external structure of the key shaft of the present invention;

[0027] Figure 6 A three-dimensional diagram of the internal structure of the solid box of the present invention;

[0028] Figure 7 It is a three-dimensional diagram of the external structure of the circular plate of the present invention.

[0029] In the figure: 1, adjustment plate; 2, rectangular frame; 3, dislocation assembly; 31, support bar; 32, telescopic rod; 33, rack; 34, gear; 35, connecting rod; 36, dislocation motor; 4, bracket; 5, fixed sleeve; 6, inner cavity; 7, air hole; 8, fixed pipe; 9, driving assembly; 91, fixed box; 92, fan; 93, air pipe; 94, square sleeve; 95, impeller; 96, rotating rod; 97, positioning unit; 971, round plate; 972, Round hole; 973, spotlight; 974, photosensitive plate; 975, clamping rod; 976, push-pull rod; 98, locking unit; 981, key shaft; 982, locking sleeve; 983, connecting column; 984, linear motor; 985, slide rail; 986, clamping plate; 99, fixing strip; 10, clamping wheel; 11, fixing ring; 12, screw sleeve; 13, stud; 14, lifting rod; 15, connecting block; 16, screw rod; 17, fixing block; 18, adjusting motor. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-7 The present invention provides a technical solution: an automatic positioning printer for PCB board printing:

[0032] Embodiment 1: Refer to the attached manual Figure 1 , Attachment Figure 2 , Attachment Figure 4 ;

[0033] The invention comprises an adjusting plate 1 arranged inside the frame, the adjusting plate 1 being arranged on the processing platform of the existing PCB board printer, a flipping mechanism being arranged outside the adjusting plate 1, the flipping mechanism comprising a rectangular frame 2, the inner dimensions of the rectangular frame 2 being adapted to the outer dimensions of the PCB board to avoid misalignment during rotation, a misalignment component 3 being arranged outside the rectangular frame 2, a bracket 4 being sleeved outside the rectangular frame 2, a fixed sleeve 5 being penetrated and fixedly connected to the body of the bracket 4, an inner cavity 6 being provided on the body of the rectangular frame 2, an air hole 7 being connected inside the inner cavity 6, the air hole 7 being provided on the body of the rectangular frame 2 and being in a through-state, a fixed pipe 8 being penetrated and connected inside the inner cavity 6, a driving component 9 being arranged outside the fixed pipe 8, the outer surface of the fixed pipe 8 being connected to the inner surface of the fixed sleeve 5 Rotational connection, the outer surface of the fixed tube 8 is penetrated and fixedly connected with a clamping wheel 10, the outer surface of the clamping wheel 10 is sleeved with a fixing ring 11, the cooperation of the fixing ring 11 and the clamping wheel 10, on the one hand, can improve the sealing of the connection between the fixed tube 8 and the fixed sleeve 5, on the other hand, can play an axial limiting role for the fixed tube 8, the outer surface of the fixing ring 11 is fixedly connected to the inside of the fixed sleeve 5, the outer surface of the bracket 4 is fixedly connected with a screw sleeve 12, the internal thread of the screw sleeve 12 is connected with a stud 13, the combination of the stud 13 and the screw sleeve 12 can facilitate the replacement of rectangular frames 2 of different sizes to adapt to PCB boards of different specifications, one end of the stud 13 is fixedly connected with a lifting rod 14, the lifting rod 14 is made of an existing electric push rod, and is electrically connected to an external control circuit.

[0034] The outer surface of the lifting rod 14 is fixedly connected with a connecting block 15. As a preferred method, an existing rotating cylinder can be arranged between the connecting block 15 and the lifting rod 14 to adjust the orientation of the fixed tube 8, thereby realizing the angle adjustment of the PCB board in different orientations. The body of the connecting block 15 is threadedly connected with a screw rod 16, and both ends of the screw rod 16 are rotatably connected with a solid block 17. One end of the screw rod 16 is fixedly connected with an adjusting motor 18 through a coupling. The adjusting motor 18 is made of a servo motor and is electrically connected to an external control circuit. The adjusting motor 18 is fixedly mounted on the outer surface of the solid block 17 on one side.

[0035] By setting a flip mechanism, the rectangular frame 2 is sleeved on the outside of the PCB board, and air is absorbed through the inner cavity 6, the air hole 7 and the fixed tube 8, so that the PCB board is adsorbed on the rectangular frame 2 by the action of negative pressure, and the fixed tube 8 can drive the PCB board to rotate through the rectangular frame 2 through the flow of air to achieve angle adjustment, thereby avoiding the problem of misalignment of the PCB board caused by the mechanical inertia force when the adjustment plate 1 is adjusted.

[0036] Embodiment 2: Based on Embodiment 1, refer to the attached Figure 1 , Attachment Figure 6 ;

[0037] A driving assembly 9 is arranged outside the solid pipe 8, and the driving assembly 9 includes a solid box 91, and a fan 92 is fixedly connected to the inside of the solid box 91, and the fan 92 is electrically connected to an external control circuit. Two air pipes 93 are connected through the inside of the solid box 91, and an electromagnetic valve (not shown in the figure) electrically connected to the external control circuit is arranged on the air pipe 93. One end of the air pipe 93 on one side is connected through the inside of the solid sleeve 5.

[0038] One end of the air pipe 93 on the other side is penetrated and connected with a square sleeve 94, which can conveniently gather the exhausted air. The inside of the square sleeve 94 is rotatably connected to an impeller 95, and the outer surface of the impeller 95 is fixedly connected to a rotating rod 96. The connection between the rotating rod 96, the square sleeve 94 and the solid sleeve 5 is provided with an existing rotation damping measure. One end of the rotating rod 96 penetrates the square sleeve 94 and the solid sleeve 5 in turn and extends to the inside of the fixed pipe 8. The outer surface of the rotating rod 96 is fixedly connected to a fixed strip 99, and the outer surface of the fixed strip 99 is fixedly connected to the inside of the fixed pipe 8.

[0039] By setting up the driving component 9 and utilizing the cooperation of the fan 92 and the air pipe 93, on the one hand, air can be sucked through the air hole 7, so that the PCB board can be adsorbed and fixed by negative pressure. On the other hand, during the exhaust process, the PCB board can be driven to rotate and adjust the angle through the action of the impeller 95 and the rotating rod 96.

[0040] Embodiment 3: Based on Embodiment 2, refer to the attached Figure 4 , Attachment Figure 7 ;

[0041] A positioning unit 97 is provided on the outside of the rotating rod 96, and the positioning unit 97 includes a circular plate 971. The body of the circular plate 971 is fixedly connected to the outer surface of the rotating rod 96, and the body of the circular plate 971 is provided with a through circular hole 972. There are multiple circular holes 972 arranged at equal angles around the central axis of the circular plate 971, and spotlights 973 and photosensitive plates 974 are respectively provided on both sides of the circular hole 972. The spotlights 973 and the photosensitive plates 974 are both electrically connected to the external control circuit, and the photosensitive plates 974 are made of photosensitive materials, and form photosensitive signals after receiving the rays of the spotlights 973. The outer surfaces of the spotlights 973 and the photosensitive plates 974 are fixedly connected to the outer surfaces of the fixed sleeve 5 and the square sleeve 94, respectively.

[0042] The circular hole 972 is movably connected to a clamping rod 975, the outer dimensions of which are matched with the inner dimensions of the circular hole 972, and the rotating rod 96 is radially limited by clamping the circular plate 971. One end of the clamping rod 975 is fixedly connected to a push-pull rod 976, which is made of an existing electric push rod and is electrically connected to an external control circuit. The outer surface of the push-pull rod 976 is fixedly connected to the outer surface of the fixed sleeve 5.

[0043] By setting the positioning unit 97 and utilizing the equal-angle setting of the circular hole 972, when the circular plate 971 rotates following the rotating rod 96, the light emitted by the spotlight 973 shines on the photosensitive plate 974 through the circular hole 972, thereby forming a photosensitive signal, and the angle of rotation is determined by the number of times the photosensitive signal is obtained.

[0044] Embodiment 4: Based on Embodiment 3, refer to the attached Figure 4 , Attachment Figure 5 ;

[0045] A locking unit 98 is provided on the outside of the rotating rod 96, and the locking unit 98 includes a key shaft 981. As a preferred manner, the key shaft 981 can also be connected to the rotating rod 96, and the outer surface of the key shaft 981 is movably connected to the inside of the fixed sleeve 5, and the body of the key shaft 981 is fixedly connected to the outer surface of the fixed tube 8. The outer surface of the key shaft 981 is sleeved with a locking sleeve 982. The cooperation of the locking sleeve 982 and the key shaft 981 can lock the fixed tube 8, so that the position of the rectangular frame 2 remains stable. The locking sleeve 982 is sleeved on the outside of the rotating rod 96.

[0046] The outer surface of the locking sleeve 982 is fixedly connected to a connecting column 983, the outer surface of the connecting column 983 is fixedly connected to a linear motor 984, the linear motor 984 is electrically connected to an external control circuit, the outer surface of the linear motor 984 is slidably connected to a slide rail 985, the outer surface of the slide rail 985 is fixedly connected to the inside of the fixed sleeve 5, the outer surface of the slide rail 985 is fixedly connected to a clamping plate 986, the clamping plate 986 serves to limit and position the linear motor 984, and the outer surface of the clamping plate 986 is movably connected to the outer surface of the linear motor 984.

[0047] By setting the locking unit 98 and using the linear motor 984 to drive the locking sleeve 982 to move so as to connect it with the key shaft 981, the rotating rod 96 can be locked, so that the fixed tube 8 cannot rotate, so that the rectangular frame 2 can stably adsorb the PCB board.

[0048] Embodiment 5: Based on Embodiment 4, refer to the attached Figure 1 , Attachment Figure 3 ;

[0049] A dislocation component 3 is provided on the outside of the rectangular frame 2, and the dislocation component 3 includes a support bar 31, and the outer surfaces of the support bar 31 are fixedly connected to the outer surfaces of the fixed block 17 and the adjustment plate 1 respectively. The outer surfaces of the support bars 31 on both sides are fixedly connected to telescopic rods 32, and the telescopic rods 32 are fixedly installed on the frame of the printer, which can guide and limit the movement of the rectangular frame 2.

[0050] The outer surfaces of the two side supports 31 are fixedly connected with racks 33, and the outer surfaces of the two side racks 33 are meshed with gears 34. As a preferred method, the gears 34 can drive the frame 2 to move through the racks 33 alone. A connecting rod 35 is fixedly connected between the two side gears 34. The outer surface of one side gear 34 is fixedly connected with an offset motor 36. The offset motor 36 is fixedly installed on the frame of the printer and is made of a servo motor and is electrically connected to the external control circuit.

[0051] By setting up the offset component 3, the offset motor 36 can make the support bar 31 drive the rectangular frame 2 to move closer to the adjustment plate 1 through the meshing of the gear 34 and the rack 33, so that it is convenient for the rectangular frame 2 to drive the PCB board to adjust the angle, and after the adjustment is completed, the rectangular frame 2 and the adjustment plate 1 are moved away from each other, which also avoids affecting the printing of the PCB board by the printer.

[0052] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0053] During operation; when the angle of the PCB needs to be adjusted, first, the offset motor 36 engages with the gear 34 and the rack 33, so that the support bar 31 drives the rectangular frame 2 to move and approach the adjustment plate 1, and then the motor 18 and the screw rod 16 are adjusted to cooperate, so that the connecting block 15 drives the rectangular frame 2 to move to the top of the PCB, and then the output end of the lifting rod 14 drives the rectangular frame 2 to move and sleeve on the outside of the PCB, and then the fan 92 works through the air pipe 93 on one side, the fixed sleeve 5, the fixed pipe 8, the inner cavity 6 and the air hole 7 to draw air into the inside of the fixed box 91, so that the PCB is adsorbed on the rectangular frame 2 through the negative pressure, and then the lifting rod 14 drives the PCB to rise through the rectangular frame 2, and at the same time, the adjustment plate 1 is adjusted in angle through existing measures;

[0054] When the angle adjustment of the adjustment plate 1 is completed, the linear motor 984 drives the lock sleeve 982 to move along the slide rail 985 through the connecting column 983, so that it is disconnected from the key shaft 981, and then the solenoid valve above the air pipe 93 on the other side is opened, and the air inside the fixed box 91 is blown into the inside of the square sleeve 94 through the air pipe 93 on the other side, and through contact with the impeller 95, the rotating rod 96 drives the fixed pipe 8 to rotate through the fixed strip 99, so that the rectangular frame 2 drives the PCB board to rotate for angle adjustment;

[0055] When the rotating rod 96 rotates, it drives the circular plate 971 to move synchronously. The circular plate 971 rotates so that the circular hole 972 follows the movement. The circular hole 972 moves so as to be coaxial with the spotlight 973, so that the light emitted by the spotlight 973 passes through the circular hole 972 and irradiates the photosensitive plate 974. The photosensitive plate 974 receives the light to form a photosensitive signal, and determines the rotation angle of the rotating rod 96 by obtaining the number of photosensitive signals. When the rotation angle reaches a predetermined value, the output end of the push-pull rod 976 extends to drive the clamping rod 975 to enter the circular hole 972, thereby The circular plate 971 is clamped to limit the rotation of the rotating rod 96, and then the linear motor 984 drives the locking sleeve 982 to connect with the key shaft 981, and then the rectangular frame 2 is adjusted to drive the PCB board to fit on the adjustment plate 1 after the angle adjustment is completed, and then the solenoid valves on the air pipes 93 on both sides are opened, and the PCB board is separated from the adsorption and fixation through the air pressure balance, so that it is sucked and fixed by the adjustment plate 1, and then the rectangular frame 2 rises and disconnects, and is driven away from the adjustment plate 1 by the offset motor 36, and then the PCB board is printed by the printer.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic positioning printer for PCB printing, comprising an adjustment plate (1) arranged inside a frame, characterized in that: The adjusting plate (1) is provided with a flipping mechanism on the outside, the flipping mechanism comprising a rectangular frame (2), the rectangular frame (2) being sleeved with a bracket (4), the bracket (4) being penetrated and fixedly connected with a fixed sleeve (5) on its body, the rectangular frame (2) being provided with an inner cavity (6), the inner cavity (6) being connected with an air hole (7), the air hole (7) being provided on the rectangular frame (2) body and being in a through-state, the inner cavity (6) being penetrated and connected with a fixed tube (8), the outer surface of the fixed tube (8) being rotatably connected with the inside of the fixed sleeve (5), the outer surface of the fixed tube (8) being penetrated and fixedly connected with a clamping wheel (10), the outer surface of the clamping wheel (10) being sleeved with a fixed ring (11), the outer surface of the fixed ring (11) being fixedly connected with the inside of the fixed sleeve (5), the outer surface of the bracket (4) being fixedly connected with a screw sleeve (12), the inner surface of the screw sleeve (12) being threadedly connected with a stud (13), one end of the stud (13) being fixedly connected with a lifting rod (14); A driving assembly (9) is arranged outside the solid tube (8), the driving assembly (9) comprising a solid box (91), the interior of the solid box (91) being fixedly connected to a fan (92), the interior of the solid box (91) being connected to two air pipes (93), one end of the air pipe (93) on one side being connected to the interior of the solid sleeve (5), and one end of the air pipe (93) on the other side being connected to a square sleeve (94), the interior of the square sleeve (94) being connected to an impeller (95) for rotation, the outer surface of the impeller (95) being fixedly connected to a rotating rod (96), one end of the rotating rod (96) being connected to the interior of the solid tube (8), the outer surface of the rotating rod (96) being fixedly connected to a fixing strip (99), the outer surface of the fixing strip (99) being fixedly connected to the interior of the solid tube (8); A positioning unit (97) is arranged outside the rotating rod (96), and the positioning unit (97) comprises a circular plate (971), the body of the circular plate (971) is fixedly connected to the outer surface of the rotating rod (96), the body of the circular plate (971) is provided with a through circular hole (972), a spotlight (973) and a photosensitive plate (974) are arranged on both sides of the circular hole (972), the outer surfaces of the spotlight (973) and the photosensitive plate (974) are fixedly connected to the outer surfaces of the fixed sleeve (5) and the square sleeve (94), respectively, the inside of the circular hole (972) is movably connected to a clamping rod (975), one end of the clamping rod (975) is fixedly connected to a push-pull rod (976), and the outer surface of the push-pull rod (976) is fixedly connected to the outer surface of the fixed sleeve (5); The rotating rod (96) is provided with a locking unit (98) on the outside, the locking unit (98) comprising a key shaft (981), the outer surface of the key shaft (981) being movably connected to the inside of the fixed sleeve (5), the body of the key shaft (981) being fixedly connected to the outer surface of the fixed tube (8), the outer surface of the key shaft (981) being sleeved with a locking sleeve (982), the locking sleeve (982) being sleeved on the outside of the rotating rod (96), the outer surface of the locking sleeve (982) being fixedly connected to a connecting column (983), the outer surface of the connecting column (983) being fixedly connected to a linear motor (984), the outer surface of the linear motor (984) being slidably connected to a slide rail (985), the outer surface of the slide rail (985) being fixedly connected to the inside of the fixed sleeve (5), the outer surface of the slide rail (985) being fixedly connected to a clamping plate (986), the outer surface of the clamping plate (986) being movably connected to the outer surface of the linear motor (984); The outer portion of the rectangular frame (2) is provided with a dislocation assembly (3), the dislocation assembly (3) comprising a support bar (31), the outer surfaces of the support bar (31) being fixedly connected to the outer surfaces of the fixed block (17) and the adjustment plate (1), respectively, the outer surfaces of the support bars (31) on both sides being fixedly connected to telescopic rods (32), the outer surfaces of the support bars (31) on both sides being fixedly connected to racks (33), the outer surfaces of the racks (33) on both sides being meshed with gears (34), the gears (34) on both sides being fixedly connected with a connecting rod (35), and the outer surface of the gears (34) on one side being fixedly connected to a dislocation motor (36).

2. The automatic positioning printer for PCB board printing according to claim 1 is characterized in that: The outer surface of the lifting rod (14) is fixedly connected to a connecting block (15), a main body of the connecting block (15) is threadedly connected to a screw rod (16), both ends of the screw rod (16) are rotatably connected to a fixed block (17), one end of the screw rod (16) is fixedly connected to an adjusting motor (18) via a coupling, and the adjusting motor (18) is fixedly mounted on the outer surface of the fixed block (17) on one side.

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